A car moving with a speed of 20 m/s applies brakes. What is the acceleration of the car?​

Question

A car moving with a speed of 20 m/s
applies brakes. What is the acceleration
of the car?​

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Tryphena 5 years 2021-08-16T00:37:32+00:00 1 Answers 14 views 0

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  1. MichaelMet
    0
    2021-08-16T00:38:45+00:00
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    Explanation:

    speed : U = 20 \: m {s}^{ - 1} \\ {V}^{2} = {U}^{2} + 2aS \\ 0 = {20}^{2} + (2 \times a \times S) \\ a = \frac{200}{S} \: m {s}^{ - 1}

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )